Continuity mistake: Hurley's lottery ticket changes from when it is first shown to when it is shown later.
Continuity mistake: At the end of the episode, when Sun is burying the message bottle late at night, the camera shows close-ups of her hands. In the space of a few seconds, she has no ring on her left hand, then a ring, then no ring. (00:40:30)
Continuity mistake: When Hurley's mum is trying to wake him up, the position/way he's holding his ticket changes. (00:06:20)
Tabula Rasa - S1-E3
Continuity mistake: When Ray's pickup truck swerves off the road, it flips and the tailgate completely breaks off, yet in the following shots the bright red tailgate remains intact. (00:30:45)
House of the Rising Sun - S1-E6
[While fleeing from an angry swarm, Kate takes her shirt off as insects are trapped in it. Charlie later finds her and hands her the shirt she dropped with a questioning look.]
Kate: It was full of bees.
Charlie: [Looking at her chest.] I'd say more like C's.
Answer: He was eating a peice of an orange with the skin still on.
XIII